<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0,
     maximum-scale=1.0, minimum-scale=1.0, user-scalable=no">
    <title>Document</title>
    <style>
        * {
            margin: 0;
            padding: 0;
        }
        .content {
            width: 100%;
            max-width: 980px;
            min-width: 200px;
        }
        .first {
            float: left;
            width: 50%;
            height: 400px;
            background-color: aquamarine;
        }
        .second {
            float: left;
            width: 50%;
            height: 400px;
            background-color: palegoldenrod;
        }
    </style>
</head>
<body>
    <!-- 流式布局初体验 -->

    <div class="content">
        <div class="first"></div>
        <div class="second"></div>
    </div>
    
</body>
</html>